Instead, you can wait until the images are fully loaded. Note: there's no streaming indicator in Google Earth app. Please remember that once you're disconnected, you'll be able to view cached areas only. When this indicator has reached 100% for the imagery you're viewing, Google Earth has gathered all available data for that specific altitude and settings, so you can disconnect from the internet. Please pay attention to the Streaming indicator, which appears just below and a little to the right of your images. To do so, log on to the internet and visit the imagery you'd like to view while you're offline. You can, however, cache (save) small amounts of data that you can access when you're offline.

Google Earth works best with a live internet connection. However, just like Google Maps, you can cache a small portion of it for offline viewing. As of current writing, Google Earth doesn't support full offline mode, in which you can specify to download certain location's satellite imagery in detail.

How to use google earth offline